joysaxey,

This is (slightly edited) from the PDF Help file that come with MEP:

Actions at the end of the movie (preview images in film menu only)

Enter which action should be carried out once the film has finished playing here.

Select from:

• Stop playback: This option depends on the DVD player being used. Most DVD players show the DVD player's own menu (or background picture) after playback.
• Jump to movie menu/chapter menu: Jumps back to the previously displayed menu.

Tip: If one of these two options is not available, please check which menu mode is set.

• Jump to next movie: The next movie will be played without any additional action.
• Play movie as endless loop: Any movie may be burned onto a disc as a loop. This means that the movie will be played as a endless loop until the next menu entry is accessed using the remote control or playback is stopped. This way, you can transform your TV into an aquarium, a train journey, a fireplace or anything that you could watch over and over again.

Note: This option only functions for DVDs, Mini DVDs, or Blu-ray Discs.

Note: It says these are the actions at the end of a movie, not chapter. I think what you want can only be acheived by making a project with separate movies, not just one movie with chapters.

Regards,

Carl